In fact, it is not mandatory. You should be recommended by your mortgage expert. I guess you don't remember it yourself, because you have to sign the application form and provide your ID card and other materials to apply for a credit card. It is estimated that you have approved your mortgage loan qualification and are also a quality customer. You must meet the requirements for applying for a credit card, so I recommend you to apply together ~ In fact, CCB's credit card is still good and one of the best in the industry. The landlord can consider using it. If you don't want to use it, you can also call the customer service hotline directly to apply for cancellation. number